LOS ANGELES – Roger Cedeno isn’t a home-run hitter, but he played one on TV Tuesday night.

With one out in the ninth inning and the Mets leading the Dodgers 2-0, Cedeno lined an Eric Gagne fastball into the Met bullpen in right field for his first homer of the year. The blast was a good 400 feat, hitting the back wall of the pen.

“That’s the best ball I ever hit in my career,” Cedeno said. “This ball I got [a hold of]. I was surprised when I hit the ball like that. That ball was hit way out.”

Cedeno has looked better at the plate of late, and after a 2-for-5 night with a double, he raised his average to .217.

Monday night he didn’t start but went 2-for-4 off the bench, with two hits from the right side. Cedeno says he sees the ball coming “all the way to me,” a sign he’s able to put his best swing on pitches.

Cedeno was reinserted in the top spot in the lineup on Tuesday night and hit safely for the 10th time in his last 14 games.

“I feel better – a little bit better,” Cedeno said.

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With John Valentin placed on the disabled list with a partial rotator-cuff tear, the Mets called up infielder Ty Wigginton from Triple-A Norfolk.

Valentin, with two homers and 11 RBIs in just 68 at-bats, said he’s never felt a problem in his right shoulder. But a doctor said he has a partial thickness tear in his right rotator cuff.

He had some of the tear previously, but injured the shoulder taking a check swing during a second-inning at-bat on Monday night.

“I go by how I feel,” said Valentin, who hopes to rest the shoulder for about two weeks and come back quickly. “If we were in a playoff game, I would’ve just not said nothing. I would’ve just played.”

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After catching two extra-inning games Sunday and Monday, Mike Piazza was given a rest Tuesday. Manager Bobby Valentine’s decision paid off, as catcher Vance Wilson threw out Cesar Izturis trying to steal in the sixth inning. It was the seventh time Wilson caught a runner in 18 attempts. Piazza, who has thrown out four runners in 29 attempts, was expected to be back in the lineup last night.